How can I get the foreign keys of a table in mysql

Question

I am creating a class which, takes a table from a database, and displays it to a web-page, with as much functionality as possible. One of the things I would like to support,

Answer 1

The INFORMATION_SCHEMA database contains details of the full schema of all other databases, including constraints:

http://dev.mysql.com/doc/refman/5.0/en/information-schema.html

You can also run a SHOW CREATE TABLE query to get the SQL to create a table, including its constraints.